[DabAsteroid]

we only have large-scale climate readings for the last 100 years or so. Past that it's sparse readings, interpolations and projections.

...And these paintings: .

http://en.wikipedia.org/wiki/Maunder_Minimum

http://en.wikipedia.org/wiki/Little_Ice_Age

http://en.wikipedia.org/wiki/Little_Ice_Age#Depictions_of_wi... http://en.wikipedia.org/wiki/Hendrick_Avercamp

http://images.google.com/images?q=Hendrick+Avercamp